How many total, non-unique alleles are there for each gene in a population of 400 humans?

200

1600

800

400

Explain the basic difference in the way the two groups of hormones make contact with the target cell

Which type of water is the most dense? A. cold water with high salt content B. warm, salty water C. cold water with low salt content D. warm water with no salt

in a 3.5 mile stretch of river in columbia, 430 fish were captured and marked. 2 weeks later a total of 450 fish were marked. the total length of the river is 12.4 miles. estimate the fish population in this river during this study

Explain how genes are expressed for a particular reason

Which statement is part of the cell theory? A. Cells are composed of organic molecules. B. Cells have DNA as their genetic material. C. Cells have cytoplasm surrounded by a membrane. D. Cells come from pre-existing cells.

Which of the below is TRUE regarding desertification? a. It is likely to happen in any type of climate b. It produces rich desert ecosystems c. It is not usually impacted by droughts or climate change d.

What is considered a pre existing medical condition?

Humans do not eat the algae directly from the ocean, so how can we still be affected by it?

In an effort to control the ongoing cholera epidemic affecting Haiti, health officials are considering the use of cholera vaccines. One difficulty they are facing is the limited vaccine supply.

which term refers to the structure that forms the surface of a cell separeting its conctents from the outside world